Belt-fastener.



?. M. LiDERMAN.

BEL FASTENER.

APPLscATloN FILED Aus.5. 1914.

Patented App. 27, 1915.

VFIELAITK LINDERMAN, OF CHICAGO, ILLINOIS.

VBairr-rasrnnna.

Speccation of Letters Patent.

Application filed August 5, 1914. Serial No. 855,255.

The blank 7 (Fig.1), stampedout of'- flexible sheet-metal, ,comprises a continuous T all whom it may concern Be it known.that I, FRANK M. LINDER- MAN, a citizen of the United States, residing at Chicago, in the county of Cook and State ot' Illinois, have invented a new and useful Improvement in Belt-Fasteners, of which the following is a specification.

My invention relates to an improvement in the class of fasteners or hooks employed for fastening together the ends of machinery-belts; and it relates, as more particularly stated, to an improvement in the type of such hooks involving two series of arms extending in staggered relation from the opposite edges of a joining medium, or bar, to embrace, jaw-like, an end 'of the belt to be fastened, the arms terminating in prongs `to penetrate the material of the belt near its end Iand be clenched on opposite sides thereor'. Where this type of fastener is used, two of the belt-hooks, each in a continuous length, or in sections, -are ordinarilyemM ployed to extend in opposite directions from a pintle .to engage their prongs with the respective belt-ends to be joined. s

The 'more important'objects of` my improvement are to duplicate the pointed prongs on each arm and so form their junction with the latter that whenl the prongs are driven ythrough the belt' those' of each pair will spread apart at the opposite surface ofthe belt to securely and automatically clench the hook in place; and to so provide the scorings inthe junction be-y tween oppositely extending arms that they may there be readily broken apart,.' for shortening a hook, but will not weaken the structure Ito impair it for resisting the strains to which it is subjected in use.

My further object is to provide a generally improved construction of belt-hook.

In the accompanying drawing, 'Figure 1 is a plan view oi' a blank stamped out ofv flexible sheet-metal and adapted to be -formed, by bending, into my improved. article; Fig. 2 is a plan view showing ends of a belt fastened by two of my improved belthooks hinged together; Fig. 3 is an end view of the'showing in Fig. 2; Fig. 4 is a section on line s, Fig.-2; 5 is a view4 in end .elevation ofone of the hooks, and Fig. 6 isv a view showing a pair of hook-prongs penetrating through the belt, and representing by dotted illustration the protruding ends spread apart and clenched against the obverse `belt-surface.

junction-bar 8 of general Zig-Zag shape formed of successive sections 8a and 8,b eX- tending diagonally with relation to each other. Each section 8EL is provided in -one face, near its opposite ends, with diagonally-extending scores 8c to weakenand facilitate breaking out of any such sectionl for l shortening the length of'a hook formed oit' PatentedApr. 27, 1915. l

the blank as hereinafter explained. From the opposite apexes of the bar extends, on each side thereof, a series of .successively longer and shorter arms 9 and '10, whereby the arms on one side are in staggered iielaf tion to those on the opposite side of their intermediate junction 8. Each arm terminates at its outer end in a pair of oppositely projecting prong-forming points 11, the members of each pair being'adapted to be bent, to form the prongs hereinafter described, at their junctions with the arms along the diagonal lines represented at 12, which converge outwardly. The arms onl I iid one side of the bar arelshown to be rela-- tively widen/throughout a portion of their length, than those on the opposite side, and to be longitudinally grooved"as shown at 13, the grooves being formed asv concavoi 'convex depressions.

To form a blank into a belt-hook 14, the' members of each pair of the points 11* are Y bent toward each other alongthe diagonal lines 12 to extend as represented in Figs. 2

and 5 andform the prongs 11, and the blank is bent upon itself at the grooved arms', at points midway between the ends of the grooves, to produce the configuration of beltf hook illustrated in Fig. 5.

Two of the hooks 14 are required for joinA ing ends of a belt 15, and they are connected between those ends by a pintle 16,01 metal or other suitable material, which is preferably, like that shown in my Letters Patent No.. 982,374, dated January 2.1-, 1911, of? the corrugated form illustrated, to fit'the round ed bearings formed at the inner endv of each. hook by the opposing sections of the grooves 13 and thereby prevent longitudinal displaeement of the pintle. The hooks thus extend in opposite directions hingedly from and intermesh with each other along the pintle, as represented. In that position, each hook or 'fastener is 'adapted to embrace one end of, a belt lwith the arms extending 'at varying distances along the same, whereby when the prongs are driven into the belt they engage it at those distances from the end to enhance the security of the hold oi the hook. in driving the prongs, which is ordinarily done upon a suitable anvil, their ldiagonal connection at l2 with. the arms causes the members of each pair to spread outwardly at their end-portions projecting beyond the belt and be self-clenched in that spread condition against the adjacent beltsurface, whereby the -astening is rendered secure.

As will be seen, the strains exerted transversely on the hooks in running over crownaced pulleys about which the belt may be guided, would tend to break the hooks at the scores in the bar 8, where they extend, as they ordinarily do, parallelwith the arms; but where the scores extend diagonally, in accordance with my improvement, that tend-` ency is reduced to the minimum, since the strain is exerted crosswise of the diagonal scores.

y lt willl also be apparent that by forming l the junction-,bar 8 as a series of V-shaped l sections, the strains on the hook are divided by the diagonal bar-sections diverging from i each arm and are distributed over the two l arms extending from the ends of these diverging sections, thereby adding greatly to thestrength -of the hook over one wherein the strain is exerted straightway throughout opposite arms.

lWhat l claim as new and desire to secure by Letters Patent is l. Abelt-astener comprising a bar formed of diagonally-extending sections forming apexes alternately on opposite edges oit' the lbar and having diagonal scores in one face, arms of varying length on each edge of the bar extending from the successive apexes, the arms on one edge of the bar being bent on themselves between their ends to extend along the spaces between the arms on the opposite edge thereof, and prongs on the outer ends of the arms.

2. A belt-fastener comprising abar formed of diagonally-extending sections forming apexes alternately on opposite sides of the bar, arms extending from opposite edges of the bar, the arms on one edge being bent on themselves between their ends to extend along the spaces between the arms on the Opposite edge, and a pair or' prongs on the outer end of each arm having the members folded toward each other on diagonal outwardly converging lines, at the junctions between the prongs of each pair and the respective arm, whereby in the driving of the prongs the members of each barare caused to spread outwardly at their end portions and to be self-clenched in spread condition against the,adjacent belt surface.

3. A belt-fastener comprising a. bar formed of diagonally extending sections forming apexes alternately on opposite edges of the 

